The marriage between a Li metal anode and the solid-state electrolyte is expected to limit the safety risk of secondary batteries. However, dendrites and interfacial stability hinder the combination of Li metal anode and solid-state electrolyte. Herein, a plastic crystal electrolyte (PCE) and three-dimensional (3D) host structure played the role of a matchmaker in combining the solid-state electrolyte and Li metal anode. Succinonitrile cooperated with Li salt and Li_6.4La₃Zr_1.4Ta_0.6O₁₂ nanosize powder and built a PCE interphase, which enhanced the interfacial stability between Li_1.5Al_0.5Ge_1.5(PO₄)₃ and Li metal anode. To protect the soft PCE from the dendrite penetration, commercially sold Super P, carbon nanotube, KS6, and Ketjen black were co-heated with the melted Li metal. However, only KS6 built a 3D host in Li metal successfully because of its high graphitization and layered structure. Benefitting from the matchmakers, the solid-state batteries exhibited enhanced cycling stability.

中文翻译：

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锂金属阳极与NASICON结构的固态电解质之间的婚姻媒人：塑性晶体电解质和三维主体结构。

锂金属阳极与固态电解质之间的结合有望限制二次电池的安全风险。然而，树枝状晶体和界面稳定性阻碍了锂金属阳极和固态电解质的结合。在本文中，塑料晶体电解质（PCE）和三维（3D）主体结构在固态电解质和锂金属阳极的组合中扮演了媒人的角色。丁二腈与锂盐和锂_6.4 La ₃ Zr _1.4 Ta _0.6 O ₁₂纳米粉协同作用，建立了PCE相，增强了Li _1.5 Al _0.5 Ge _1.5（PO ₄）的界面稳定性。₃，阳极金属锂。为了保护软PCE免受树枝状晶体的侵害，将商业出售的Super P，碳纳米管，KS6和科琴黑与熔融的Li金属一起加热。但是，由于其高石墨化度和分层结构，只有KS6成功地在Li金属中构建了3D主机。受益于媒人，固态电池具有增强的循环稳定性。